Add IR printing into a supplied buffer.

vm/compiler.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/compiler.h"
 
 #include "vm/assembler.h"
 #include "vm/ast_printer.h"
 #include "vm/code_generator.h"
 #include "vm/code_patcher.h"
@@ skipping 169 matching lines @@
           isolate->set_ic_data_array(
               ExtractTypeFeedbackArray(unoptimized_code));
         }
       }
       FlowGraphBuilder graph_builder(parsed_function);
       graph_builder.BuildGraph(optimized);
 
       // The non-optimizing compiler compiles blocks in reverse postorder,
       // because it is a 'natural' order for the human reader of the
       // generated code.
-      intptr_t length = graph_builder.postorder_block_entries().length();
+      intptr_t length = graph_builder.postorder_block_entries()->length();
       for (intptr_t i = length - 1; i >= 0; --i) {
-        block_order.Add(graph_builder.postorder_block_entries()[i]);
+        block_order.Add((*graph_builder.postorder_block_entries())[i]);
       }
     }
 
     Assembler assembler;
     FlowGraphCompiler graph_compiler(&assembler, parsed_function,
                                      block_order, optimized);
     {
       TimerScope timer(FLAG_compiler_stats,
                        &CompilerStats::graphcompiler_timer,
                        isolate);
@@ skipping 330 matching lines @@
     isolate->object_store()->clear_sticky_error();
     isolate->set_long_jump_base(base);
     return result.raw();
   }
   UNREACHABLE();
   return Object::null();
 }
 
 
 }  // namespace dart